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Thread: Sub 4GHz SPi 1M

  1. #1
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    Sub 4GHz SPi 1M

    Is it possible to go below 11.550s with sub 4GHz in 1M super pi? I run it at 470*8.5 with 7-6-5 1880MHz DC and just cant go below 11.560s... What is you result?

  2. #2
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    I was 11.4xx with a 3.9Ghz quad (488Mhz), and 4-3-3-12 timings..let me dig up the SS

  3. #3
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    sub 4 GHz ?? do u mean for 3999 Mhz ? or how much exactly , i can do some test
    2600K working in 4.8 GHZ so far

    2600k @(4600 Ghz) 1.42v : (under water)
    Asus B2 mobo
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    GTX 570 @ 1.063v ( 910/1820/2001 Mhz) .(under water).
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    Hobie's : Overclocking .... Overclocking .... Overclocking

  4. #4
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    There's nothing hard about that.
    Lets take "performance points" for reference (spi1M time x CPU MHz).
    I'll point out that Super Pi "performance" depends on OS(XP usually faster than Vista etc); ram speed/timings; FSB; services/programs/processes etc; chipset; HDD etc.

    A "normal" 24/7 45nm+DDR2@CL4 system does ~46500pp. When we want 11,549sec, then 46500:11,549=4026MHz
    A little bit "lited" XP with less background processed does below 46000pp (my P35+E8500+DDR2@CL4 did 45800pp 24/7).
    Example: 45900:11,549=3974MHz
    Well-tweaked systems can do even below 45000pp (high-end extreme tweakers can do even below 44000pp). That means fresh OS (usually lited), only essential services + "OS tweaks", real tight ram timings etc etc etc.
    Example: 44500:11,549=3853MHz

    Commonly DDR3 is a little bit slower in 24/7 spi1M (because of timings). I'd say around ~47000pp or worse.
    Example: 47100:11,549=4078MHz

    It's simple math Just multiply Your CPU MHz with time so You'll see how Your system performs.
    7-6-5 1880MHz DDR3 for 24/7 is really good and should do below 46500pp easily. If it can't, then You'll have to look whats "bottle-necking" Your system. Probably old OS, full of "crap" etc. You can see a little boost when You close all "unnecessary" processes in TaskManager, set affinity to one core and use RealTime
    PS. What motherboard are You using?
    Good luck!
    Last edited by ceemic; 09-11-2008 at 05:09 PM.
    Vmods - what can possibly go wrong?

  5. #5
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    I run it at diagnostic mode,set affinity to cpu 1,and SP to realtime... Fresh install of windows XP SP1,no drivers for chipset,gpu...

    I'm using black ops with gts memory chips
    Timings was 7-6-5-15-52,Performance level was 6,twr 20,twtr 16,trrd 5,trtp 5...

    Here is screen shot


    And when I'm asking,is this good score?
    Last edited by quake6; 09-12-2008 at 12:55 AM.

  6. #6
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    Just serving a super light XP with almost "0" background activity helps a lot...

    (XP+nLite/142MB CD)


    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-EVGA 9800GX2SC-High Power HPC 1000 G14C 1000W-HP W2448HC HDMI
    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-Sparkle 8800GTX-SilverStone ST1000NV 1000W-Samsung T260HD

  7. #7
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    Where can I find that super light XP
    Do you have image?

  8. #8
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    quake6, that's almost OK, tho I would have quessed with these timings and "tweaks" it performs below 46000pp.
    Try to boot with 398FSB and use SetFSB in win to go the same clock :P
    Vmods - what can possibly go wrong?

  9. #9
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    I use 183MB XP install CD for benching in 36GB Raptor The memory usage is 26MB and only 1 service running
    I can help You with that: PM
    Vmods - what can possibly go wrong?

  10. #10
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    I just dont know where I'm making mistakes for SUB 4ghz... Sub timings are also quite tight,memory is working at 2.3v and that is enough for very tight sub tim.,and in task manager I turn everything that I can,I have only 6 (i think it is 6) process in it

  11. #11
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    Quote Originally Posted by quake6 View Post
    Where can I find that super light XP
    Do you have image?

    Yeah homebrew, but it's illegal to make copies

    u better download nLite and some manuals to create a light XP image...

    S-LightXP/AWD 9D Max/E8600/Kingston HyperX 1066/No Tweaks...

    Last edited by TheGanG; 09-12-2008 at 02:19 AM.


    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-EVGA 9800GX2SC-High Power HPC 1000 G14C 1000W-HP W2448HC HDMI
    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-Sparkle 8800GTX-SilverStone ST1000NV 1000W-Samsung T260HD

  12. #12
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    ddr2 perform better than ddr3 at spi1mb...
    if you try 8mb or 16 or 32 ddr3 own!

  13. #13
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    And how did you achieve that?
    Ok,I got 11.547s,for now... Stay tuned

  14. #14
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    Also note, that spii1M efficiency depend on motherboard manufacturer also
    Usually Gigabyte<Asus<DFI with same chipset.
    Vmods - what can possibly go wrong?

  15. #15
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    Here are my settings...



  16. #16
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    11,2xx @ 4GHz is very doable with any Intel chipset and prepenryn BIOS

  17. #17
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    And could somebody say where I'm mistaking? I did nlite XP,fresh install again and it's the same...

  18. #18
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    u may try a some lower memory timing . this may help . As said above DDR3 is not good for 1MB but if u try 32mb 16 or even 8 mb your result will be far better
    2600K working in 4.8 GHZ so far

    2600k @(4600 Ghz) 1.42v : (under water)
    Asus B2 mobo
    4 GiG DDR 2400 MHZ
    GTX 570 @ 1.063v ( 910/1820/2001 Mhz) .(under water).
    1020 W PSU

    Hobie's : Overclocking .... Overclocking .... Overclocking

  19. #19
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    E8400 500X8
    OCZ Vendicator
    2x1GB Geil Ultra PC8500 D9GMH 500MHz 4-4-4-12 2.25V
    P5K Vanillia Vmod pencil Vdroop only
    XP Pro SP2 lite by me
    Services killed (35Mo ),run with real time ,affinity core #1

    Score : 11.250s

    Xtrem of nothing.

  20. #20
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    @makaka: I just cant go lower then that...
    @redratamd: nice score

  21. #21
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    Quote Originally Posted by jmax_oc View Post
    11,2xx @ 4GHz is very doable with any Intel chipset and prepenryn BIOS
    Yeah, "unknown CPU" makes a good job...


    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-EVGA 9800GX2SC-High Power HPC 1000 G14C 1000W-HP W2448HC HDMI
    Intel DP55KG-Core i5-750-Kingston Hyperx DDR3 1800MHz-Sparkle 8800GTX-SilverStone ST1000NV 1000W-Samsung T260HD

  22. #22
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    These are my results...



    I have to take of 7s for 32m... I use maxmem 512,no PF,waza size 480mb,single file size 128kb and no CDT...

  23. #23
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    Okay...After 2 all day benching,I've finally manage to get this


  24. #24
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    At 3.8Ghz, my 24/7, I'm around 12.3-12.4 but thats with PC6400 ram and auto timings.

  25. #25
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    Be free to post your setup here


    MBO Gigabyte P67-UD4-B3 // CPU Intel i5 2500k //
    GPU Gigabyte GTX470 // PSU Corsair TX650W //
    RAM 2*2GB Geil Black Dragon + 2*2GB Corsair DominatorGT // HDD WD 640GB + Seagate 250GB (410AS)

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